Police say a man sitting at the back of a public bus on the Las Vegas Strip started shooting "for no apparent reason" as passengers got off at a stop in the heart of the tourism corridor.

A man riding on a double decker bus on the Las Vegas Strip pulled a gun and started shooting, killing one person and wounding another before barricading himself inside in a standoff that lasted hours before he finally surrendered.

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Police said Sunday that 55-year-old Rolando Cardenas is accused in the shooting.

He has been booked into jail on suspicion of murder, attempted murder, burglary and opening fire on the bus. An attorney for Cardenas couldn't immediately be found.

The standoff began about 11 a.m. PDT Saturday on the bus when it was stopped on Las Vegas Boulevard near the Cosmopolitan hotel-casino. Police say passengers were leaving when Cardenas stood up and fired several rounds from a handgun.

"He was on the bus. He was shooting people on the bus. He was just contained to that location. He never exited the bus," Clark County Assistant Sheriff Tom Roberts said.

The bus had stopped on the Strip near the Cosmopolitan hotel-casino and passengers were leaving when Cardenas stood up and fired several rounds from a handgun, police said. The man didn't fire all of his bullets, but he did shoot at police during the barricade. Police said they didn't fire any shots. Assistant Sheriff Tom Roberts also said that authorities believe Cardenas may have had "mental issues."

The Clark County coroner's office identified the victim as Gary Breitling, 57, of Sidney, Montana. He died at a hospital shortly after the gunfire was reported Saturday.

Another victim was shot in the stomach and was hospitalized but is expected to live. Both victims were seated in the back with Cardenas, police said.

It was not known how many people were on the bus at the time of the shooting, but the bystanders and the victims had fled. Police have started a hotline seeking to hear what those passengers witnessed.

W. Brent Chism via CNN

Police have not released information on the suspect, who surrendered peacefully after a standoff inside the double-decker bus that lasted more than four hours.

The bus had stopped on the Strip near the Cosmopolitan hotel-casino, forcing the heart of the tourism corridor to shut down until Saturday night.

It was not known how many people were on the bus at the time of the shooting, but it appeared that the riders were able to flee. Police have started a hotline seeking to hear what those passengers witnessed.

For hours, crisis negotiators, robots and armored vehicles surrounded the bus with authorities uncertain if there were any more victims inside. Meanwhile, officers swept into the casinos to warn tourists to bunker down until further notice, leaving these normally bustling pedestrian areas and a road notorious for taxi-to-taxi traffic completely empty. The Strip was shut down for blocks in both directions.

Some in the Cosmopolitan — hotel guests out over their balconies, party people on the pool deck — saw the tense situation unfold below.

Former NBA player Scot Pollard, who is staying at the Cosmopolitan, told The Associated Press by phone that he was at a bar at the hotel-casino around 11 a.m. when he saw several people, including staff, running through the area toward the casino and repeatedly screaming "get out of the way." After he was told that the area would be closed, he went back to his room, which oversees the Strip.

"We can hear them negotiating. We can hear them saying things like 'No one else needs to get hurt,' 'Come out with your hands up. We are not going anywhere. We are not leaving,' " he said.

Steve Ouimet via CNN

Police search The Cosmopolitan casino and resort Saturday after a shooting that killed one person and injured another.

Visitors were also hiding out inside some of the other prominent casino properties affected, including the Bellagio, Paris, Planet Hollywood and Bally, which in addition to hotels and casinos also hold restaurants, shops and attractions.

Las Vegas Police officer Larry Hadfield said just before 3:30 p.m. that the man, who had a handgun, surrendered without incident. Police did not open fire and said they believe the man is the only suspect. Terrorism or any connection to an earlier robbery nearby that shut down a part of the Bellagio has been ruled out. No other information about the man has been released.

By 4 p.m., pedestrians were back in the area and northbound traffic on Las Vegas boulevard had reopened while investigators worked to clean up the other lane where the bus was still grounded.

The bus is operated by the Regional Transportation Commission of Southern Nevada. The agency said its bus driver was not hurt.

It's unknown how many people were on the bus at the time of the shooting but it appears that those who were there were able to flee. Police have started a hotline in search of those passengers to report what they witnessed.